PCM5121 datasheet(44/121 Pages) TI2

Part #	PCM5121

Description	PCM512x 2-VRMS DirectPath™, 112-dB and 106-dB Audio Stereo DACs With 32-Bit, 384-kHz PCM Interface

PDF	121 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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44 / 121 page

PCM5121, PCM5122

SLAS763C – AUGUST 2012 – REVISED OCTOBER 2018

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Product Folder Links: PCM5121 PCM5122

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Table 30. Ramp-Up or Down Frequency

RAMP-UP

SPEED

EVERY N fS

COMMENTS

RAMP-DOWN

FREQUENCY

EVERY N fS

COMMENTS

Default

Direct change

Table 31. Ramp-Up or Down Step

RAMP-UP

STEP

STEP dB

COMMENTS

RAMP-DOWN

STEP

STEP dB

COMMENTS

4.0

-4.0

2.0

-2.0

1.0

Default

-1.0

Default

0.5

-0.5

8.3.5.4.1

Emergency Ramp-Down

Digital volume emergency ramp-down by is provided for situations such as I2S clock error and power supply

failure. Ramp-down speed is controlled by Page 0, Register 64, D(7:6). Ramp-down step can be controlled by

Page 0 Register 64, D(5:4). Default is ramp-down by every fS cycle with –4-dB step.

8.3.5.5 Analog Gain Control

Analog gain control can be selected between 2-Vrms FS (0dB) or 1-Vrms FS (–6 dB). Gain is controlled through

hardware by the AGNS pin, and through software (SPI/I2C), Page 1, Register 2, D4(L-ch) / D0(R-ch).

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